A donut, sometimes spelled doughnut, (COMIC: The Eternal Dogfight) was a food item from Earth. Chris Cwej had some donuts and an espresso in Canada in 2040. (PROSE: The Nuclear Option) Very similar food was also known to other races, such as Amstrons. (COMIC: The Eternal Dogfight)
The Fourth Doctor was in the mood for donuts when he landed on Vita Novus. After Madame Karna was defeated, Sibella Bing gave the Doctor a bag of donuts in gratitude. (AUDIO: The Beautiful People)
Matildus Galathea gave Grovian doughnuts to the Kaballus Kids: Lozz, Zeddy, Sparks and Morpho. (COMIC: Matildus)
The Sixth Doctor likened the shape of the stars of the pre-universe to giant donuts. (PROSE: Millennial Rites)
Ace gave Melanie Bush the nickname "Donut". (TV: Dragonfire; AUDIO: A Life of Crime, Fiesta of the Damned, The Blood Furnace)
Aisha Akhtar brought yellow-stickered doughnuts to a meeting with Helen Sinclair and Tony Clare, noting that "they were only going to waste." (AUDIO: The Keys of Baker Street)
While on the run in Spyfall Part 2, Graham called Ryan and Yaz "a right couple of doughnuts" for failing to prepare for their dilemma.
Behind the scenes
References in invalid sources
A donut was present in a room within which a child used a LEGO Gateway. Homer Simpson appeared out of it, having been eating it. (WC: Endless Awesome)